Danfoss FC 300 Instruction Manual

FC 300 Instruction Manual
How to Install
" Fuses
Branch circuit protection:
In order to protect the installation against electrical and fire hazard, a ll branch circuits
in an installation, sw itch gear, machines, etc., must be short-circuit and overcurrent-
protected according to national/internati onal regulations.
Short circuit protection:
The adjustable frequency drive must be protected against short-circuit to avoid electrical or fire
hazard. Danfoss recommends using the fuses mentioned below to protect service personne l or
other equipment in case of an internal failure in the drive. The adjustable frequency drive provides
full short-circuit protection in case of a short-cir cuit on the motor output.
Overcurrent protection:
Provide overload protection to avoid fire hazard due to overheating of the c able s in the instal
lation.
The adjustable frequency drive is equipped with internal overcurrent protection that c an be used
for upstream overload protection (UL applications excluded). See par. 4-18. Moreover, fuses
or circuit breakers can be used to provide overcurrent protection in the installation. Ov
ercurrent
protection must always be provided according to national regulations.
Fuses must be designed for protection in a circuit capable o f supplying a maximum of
100,000 A
rms
(symmetrical), 500 V maximum.
Non-UL compliance
If UL/cU L is not to be complied with, we
recommend using the following fuses
, which will
ensure compliance with EN5 01 78:
In case of malfunction, not following the
recommendation may result in unnec
essary damage
to the adjustable frequency drive.
FC 30X Max. fuse size Voltage Type
K25-K75 10A
1)
200-240 V type gG
1K1-2K2 20A
1)
200-240 V type gG
3K0-3K7 32A
1)
200-240 V type gG
K37-1K5 10A
1)
380-500 V type gG
2K2-4K0 20A
1)
380-500 V type gG
5K5-7K5 32A
1)
380-500 V type gG
11K 63A
1)
380-500 V type gG
15K 63A
1)
380-500 V type gG
18K 63A
1)
380-500 V type gG
22K 80A
1)
380-500 V type gG
1) Max. fuses - see national/international
regulations for selecting an applicable fuse size.
21
MG.33.A6.22 - VLT is a registered Danfoss trademark

Danfoss FC 300 Specifications

General

Brand	Danfoss
Model	FC 300
Category	DC Drives
Language	English